Matsu

Matsu may refer to:
 * Mazu, or Matsu, a sea goddess in Chinese folk religion
 * Matsu-class destroyer
 * Matsu Islands (Lienchiang County), Fujian, Republic of China (Taiwan)
 * Matsu Beigan Airport
 * Matsushima (Matsu Islands), in Miyagi Prefecture, Japan
 * Japanese ship Matsu, several ships
 * Matsu (Sekirei), a character in the Sekirei manga and anime
 * Japanese pine (まつ, 松), matsu in Japanese